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You searched for: mediatype:movies AND collection:corevideo AND subject:"Counterweight"
[movies]NASA SCI Files - Elavators - NASA LaRC Office of Education
NASA Sci Files segment explaining how elevators work.
Keywords: Elevator; Edith DiFrancesco; Test Tower; Efficiency; Safety; Mechanical Engineer; Sheave; Counterweight; Friction; Traction
Downloads: 103
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